SHOULD THE ELEVATOR DOORS FAIL TO OPEN OR THE ELEVATOR
BECOME INOPERATIVE, PLEASE DO NOT BECOME ALARMED. PLEASE USE
THE BUTTON MARKED "ALARM" TO REQUEST ASSISTANCE OR TELEPHONE
"IF FURNISHED." REMAIN IN THE CAR UNTIL ASSISTANCE ARRIVES AND
DO NOT ATTEMPT TO FORCE THE DOORS OR HATCH OPEN.
(emphasis mine)

For some reason I found the contrast
between the first two sentences very funny.